Credit: David Malin
Explanation:
As the
Earth spins on its axis,
the sky seems to rotate around us.
This motion produces the beautiful concentric trails traced
by the stars in this time exposure of the night sky.
In the middle of the picture is the
North Celestial Pole (NCP), easily identified as
the point in the sky at the center of all the star trail arcs.
The very short bright trail
near the NCP was made by the
star Polaris,
commonly known as
the North Star.
1999 2000 2001 2002 2003 2004 2005 2006 2007 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Публикации с ключевыми словами:
north star - star trail - Полюс мира - суточное вращение - вращение Земли
Публикации со словами: north star - star trail - Полюс мира - суточное вращение - вращение Земли | |
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